It appears that the magenta is not printing well even though the cartridge is listed as 76% full yet. Are there any utilities to run for any king of cleaning?It appears that the magenta is not printing well even though the cartridge is listed as 76% full yet. Are there any utilities to run for any king of cleaning?

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[C390] Auto-toner sensor-C abnormality (Cyan)
<Color toner low density>
When you check the printing status to find out that the color printing ratio isless than 5%, color toner low density might be the cause.
Turn the code 08-2692 "Prevention of color toner low density / ON/OFF setting" to ON, and then set number of sheets to be judged at the code 08-2693 "Prevention of color toner low density / Judged number of sheets setting".

If the color printing ratio is 5% or more, check the following.
(1) Is the developer unit installed properly?
(2) Check if the connector CN340 on the LGC board isdisconnected from the auto toner sensor or the harnesses are open circuited. Correct if necessary.
(3) Check if there is any foreign matter such as toner in the drawer connector of the equipment and fuser unit or the connector of the auto toner sensor. Remove if there is and reconnect it.
(4) Service or replace the auto-toner sensor.

Hi there! The blue color is becoming violet because the Cyan and the Magenta toners are not getting mixed in the proper 100:100 ratio (100% Magenta and 100% Cyan make CMYK Blue). Since the print is violet, the culprit is the Cyan toner. Now, first, get the Cyan Developer Assy checked if there is enough developer in it. If no, get it refilled by a proper tech and manually mix about 50 grams of the Cyan Toner with the developer. Also get the tech to check the trimmer gap on the Developer Assy with a metering gauge. If yes, next check the Cyan dispenser motor located on the backside of the Toner Housing Assy. It is probably broken and not dispensing any toner to the Cyan Developer Assy . Additionally, check for the Cyan Dispenser Auger blockage or jam. It is located under the Cyan Toner Cartridge in the Toner Housing Assy and also check the auger under the Cyan Developer Assy. After sorting these out, you should get proper CMYK blue from the 10th or 12th page once you resume printing.Let me know. Regards

Inhae had similar issues, I corrected it by slowing down the print rate to 250mm per sec and also doing a calibration to the messy used if all else failed calibration wise I used textile heat transfer profile for printing on both banner and vinyl hope this helps

Your toner usage will depend upon how much of each color toner is used on each page. (To conserve colors when printing in Black and White only, specify monochrome in your printer setup)
<div>I had similar problems when printing publicity flyers. The toner cartridges claim to be good for about 2000 prints each, but I was lucky to get 3 or 400 pages when printing blocks of color. The TN115 cartridges hold significantly more toner, and the cartridges that come with the printer are TINY.</div>

According to canon.com's website regarding the i9900 InkJet Photo Printer:

Why color ink may be used when printing in black and white
Even when printing in black and white, color ink is used for the following reasons:

Automatic cleaning of the print head.

To prevent the print head nozzles from clogging, the print head is automatically cleaned periodically. At that time, a small amount of each color ink is consumed.

Therefore, although printing in black and white is performed, color ink is also consumed.

Color inks may be used to create black.

When printing in grayscale or on photo paper or when duplex printing, although printing appears in black and white, the color black may be created using the three (cyan, magenta, and yellow) color inks. Printers without a pigment black tank / cartridge will print black / grayscale will create a composite black using color ink even on plain paper.

Therefore, although printing in black and white is performed, color ink may be consumed.

In order to keep the heavy black ink from smearing on the page or in the printer, color ink is used when duplex printing to help create black text.

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I might suggest taking out the color ink cartridges leaving only black there, but some printers don't take kindly to this. So, you may have to further experiment with magenta, cyan, and yellow to make it at least seem b&w to your best eye's judgment.

Try creating a document with four different squares, or words, of these colours: yellow, magenta, cyan and black. If all of them print (albeit not with the correct shades) it is probably an ICM driver error. But my guess is that only one of those four colors will print badly, due to a defective color cartridge.The OKI 5150 makes all perceivable colours using cyan, magenta, yellow and black toners, so if one of these malfunctions, the resulting colors will lack the required shade of, say, yellow, and will appear to be "wrong". The yellow colour itself, of course, would simply disappear (the "yellow" you use might actually be 95% yellow and 5% cyan; then the "yellow" square will be printed as a very light shade of cyan, while the other colors - say, 95% magenta and 5% yellow - will turn out almost exact).

Try with the color test and replace any failing cartridge; if all four (almost) pure colours do print incorrectly, it's unlikely to be a cartridge problem, and we'll have to dig deeper.

Most probably you have to do the Color Registration Settings and the Color Calibration.The Color Registration will fix the fuzzy printing and the Color Calibration the way how the colors looks. The Color Calibration it is done automatically after each batch of 40 or 80 pages and if you need you can do a manual Color Calibration BUT THE COLOR REGISTRATION must be done manually.

Go to Menu->Others->Service->Color Registration and print a test chart. Will print a page and you have to read the alignment of some lines Cyan Magenta Yellow Black with some numbers. Check the Advanced user guide for details. Basically you have to read the number / letters of each color where 2 lines are matching. Then you can enter those numbers into the printer for each color.

It is definite one cartridge is not running. You do one thing -
1. Write documents in MS-Word - select all - change the color to Red. Take print out. Check Printing is perfect or not.
2. Write documents in MS-Word - select all - change the color to Cyan. Take print out. Check Printing is perfect or not.
3. Write documents in MS-Word - select all - change the color to Yellow. Take print out. Check Printing is perfect or not.
I am sure when you changed the color to Cyan - it did not print Cyan or blank page you got.So you must replace the Cyan cartridge or may be ink is not coming out through the passage. And first you have to check whether you have removed the plastic tape from the head of t he cartridge.